Environmental Engineering in CE The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? Alkyl benzene sulphonate (ABS) Benzene hexachloride Alkalis Chlorine Alkyl benzene sulphonate (ABS) Benzene hexachloride Alkalis Chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Higher concentration of CO₂ in atmosphere Prevents solar heat being radiated out completely, resulting in Allows visible solar radiation (ultraviolet) of short wave-length to pass through Reflects and absorbs the longer wavelength (infra-red) radiations All of these Prevents solar heat being radiated out completely, resulting in Allows visible solar radiation (ultraviolet) of short wave-length to pass through Reflects and absorbs the longer wavelength (infra-red) radiations All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. Decreases Increases Remains constant May increase or decrease ; depends on the chemical characteristics of polluted water Decreases Increases Remains constant May increase or decrease ; depends on the chemical characteristics of polluted water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ can not control the noise pollution. Vibration damping Use of silencers Tree plantation Green house gases Vibration damping Use of silencers Tree plantation Green house gases ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following dust collection equipments is the least efficient (for sub-micronic particles)? Dust catcher (gravity type) Hollow wet scrubber Bag filter Cyclone separator Dust catcher (gravity type) Hollow wet scrubber Bag filter Cyclone separator ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE COD of raw municipal sewage may be in the range of about __________ mg/litre. 90-120 5-10 1-2 1500-2500 90-120 5-10 1-2 1500-2500 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS